rekordy: Marine life

Evidence: 40 • authority: 72

Marine biology is the scientific study of the biology of marine life, organisms that inhabit the sea. Given that in biology many phyla, families and genera have some species that live in the sea and others that live on land, marine biology classifies species based on the environment rather than on taxonomy. A large proportion of all life on Earth lives in the ocean. The exact size of this "large proportion" is unknown, since many ocean species remain undiscovered. The ocean is a complex three-dimensional world, Covering approximately 71% of the Earth's surface. The habitats studied in marine biology include everything from the tiny layers of surface water in which organisms and abiotic item…

Evidence: 24 • authority: 88

Do our marine highways disrupt blue whale habitats?. Using dedicated surveys and data from satellite tags, we identified areas where blue whales concentrate in Chilean Patagonia. We show that the main vessel traffic corridor highly overlaps with these areas, where higher risk of negative interactions between vessels and whales is to be expected, and that the aquaculture fleet is, by far, the largest and most densely distributed fleet in the area.

Evidence: — • authority: 72

The blue whale (Balaenoptera musculus) is a species of baleen whale and the largest marine mammal in the rorqual family Balaenopteridae. Reaching a maximum confirmed length of 29.9–30.5 m (98–100 ft) and weighing up to 190–200 t (190–200 long tons; 210–220 short tons), it is the largest animal known to have ever existed. The blue whale's long and slender body can be of various shades of greyish-blue on its upper surface and somewhat lighter underneath. Four subspecies are recognized: B. m. musculus in the North Atlantic and North Pacific, B. m. intermedia in the Southern Ocean, B. m. brevicauda (the pygmy blue whale) in the Indian Ocean and South Pacific Ocean, and B. m. indica in the North…

Evidence: — • authority: 72

This article lists the largest organisms for various types of life and mostly considers extant species, which found on Earth can be determined according to various aspects of an organism's size, such as: mass, volume, area, length, height, or even genome size. Some organisms group together to form a superorganism (such as ants or bees), but such are not classed as single large organisms. The Great Barrier Reef is the world's largest structure composed of living entities, stretching 2,000 km (1,200 mi) but contains many organisms of many types of species. When considering singular entities, the largest organisms are clonal colonies which can spread over large areas. Pando, a clonal colony of…

Evidence: — • authority: 72

Baleen whales (), also known as whalebone whales, are marine mammals of the parvorder Mysticeti in the infraorder Cetacea (whales, dolphins and porpoises), which use baleen plates (or "whalebone") in their mouths to sieve plankton from the water. Mysticeti comprises the families Balaenidae (right and bowhead whales), Balaenopteridae (rorquals), Eschrichtiidae (the gray whale) and Cetotheriidae (the pygmy right whale). There are 16 species of baleen whales. While cetaceans were historically thought to have descended from mesonychians, molecular evidence instead supports them as a clade of even-toed ungulates (Artiodactyla). Baleen whales split from toothed whales (Odontoceti) around 34 milli…

Evidence: — • authority: 92

Joint morphological and DNA metabarcoding gut content analysis revealed that adult body size, but not biological sex, influences variance in dietary composition within and among cunner wrasse (<i>Tautogolabrus adspersus</i>) populations.. Background Assessment of the dietary ecology of organisms is crucial for understanding community ecology. Delineation of food webs requires in-depth understanding of how predatory fish diet varies from species to species, as well as how diet varies across the life history of any single species. The cunner wrasse ( Tautogolabrus adspersus ) is a common neritic demersal temperate marine fish. Yet, little is known about how its diet changes as a f…

Evidence: — • authority: 65